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QUESTION 1
A sound sensor circuit reads a millivolt signal and to amplify the small-signal voltage from the sensor circuit, you need to design an amplifier circuit having the following specifications:
a) Mid-band gain of 20dB
b) A low cut-off frequency of 200Hz
c) A high cut-off frequency of 2MHz
d) 20V DC voltage supply
By showing all the necessary steps, construct the amplifier circuit with suitable MOSFET, resistors, and capacitors. Calculate Hence, run the simulation analysis on LTSPICE to prove your calculations.
QUESTION 2
As an RF engineer, you are required to design an amplifier circuit for an RF circuit requested by a client. The specification given by the client is as follows:
a) Mid-band gain of 0dB
b) A low cut-off frequency of 30Hz
c) A high cut-off frequency of 3MHz
d) Output impedance ~300 Ω
By showing all the necessary steps, construct the amplifier circuit with suitable MOSFET, resistors and capacitors. Hence, run the simulation analysis on LTSPICE to prove your calculations.
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